<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
    <title>放置插件</title>
    <script src="http://www.imooc.com/data/jquery-1.8.2.min.js" type="text/javascript"></script>
    <script src="http://www.imooc.com/data/jquery-ui-1.9.2.min.js" type="text/javascript"></script>
    <style>
    #divtest {
        width: 282px;
    }

    .box {
        width: 280px;
        border: solid 1px #eee;
        margin: 10px 0px;
    }

    .box .title {
        padding: 8px;
        background-color: Blue;
        color: #fff;
        height: 23px;
        line-height: 23px;
        font-size: 15px;
        font-weight: bold;
    }

    .box .drag {
        padding: 5px;
        cursor: move;
    }

    .box .drag div {
        border: solid 1px #fff;
        background-color: red;
        color: #fff;
        cursor: move;
        width: 35px;
        padding: 20px;
        text-align: center;
    }

    .box .cart {
        padding: 5px;
        cursor: move;
    }

    .box .cart div {
        padding: 5px;
        height: 55px;
        text-align: center;
    }

    .focus {
        background-color: #eee;
    }
    </style>
    <style>
    .focus {
        background-color: #ccc;
    }
    </style>
</head>

<body>
    <div id="divtest">
        <div class="box">
            <div class="title">产品区</div>
            <div class="drag">
                <div>苹果</div>
            </div>
        </div>
        <div class="box">
            <div class="title">回收站</div>
            <div class="cart">
                <div id="tip">还没有产品</div>
            </div>
        </div>
    </div>
    <script type="text/javascript">
    $(function() {
        $(".drag").draggable();
        $(".cart").droppable({
            drop: function() {
                $(this)
                    .addClass('focus')
                    .find('#tip').html('');
            }
        })
    });
    </script>
</body>

</html>